Legendary actor and box office king shares his experiences with Jared Leto for their upcoming superhero movie, Suicide Squad.

Pet rats and dyed green hair be damned -- this was the most method that Jared Leto went on the set of Suicide Squad.

According to Will Smith, Leto never broke character once the whole time they were filming, leading Smith to believe that he only ever met the Joker while they worked together on Suicide Squad.

Smith told Zane Lowe on his Beats 1 Radio interview about his (apparently out-of-his-mind) costar:

“(Suicide Squad) is insane. I’ve never actually met Jared Leto. We worked together for six months and we’ve never exchanged a word outside of ‘Action!’ and ‘Cut!’ … I literally have not met him yet. So, the first time I see him will be ‘Hey, Jared. What’s up?’ … He was all in on the Joker.”

It's pretty in keeping with Leto's own description of his performance, which he talked about at a 30 Seconds to Mars concert in Dubai (via The National):

I can’t wait for you to see this – they’re going to lock me away in a box after this movie comes out.

After Smith's description of Leto's method acting on set, maybe he should be locked in that box now...

See Smith's full interview (his Suicide Squad deets start at 15:35) with Beats 1 Radio here: